The Centennial Case: A Shijima Story – Chapter One Walkthrough

Quick Links

  • How To Solve Setsu's Murder
  • How To Identify Setsu's Killer
  • What Are The Rules Of The Shijima Family?

So you're ready to step into the role of the would-be detective and solve the mystery within The Centennial Case: A Shijima Story? It's time to crack this case wide open. The first chapter, The Wandering Mummy, takes us back to 1922 when a private auction for people seeking to prolong their lives results in a far grislier end.

This chapter will introduce you to the basic mechanics of the game, during the Incident Phase you watch scenes play out and gather clues, which you can then use to create hypotheses in the Reasoning Phase. You don't have to click on each clue as the scenes play out, as these are all automatically added in the Reasoning Phase regardless. Once you've sorted your hypotheses in the Solution Phase, you can continue with the story to unmask the killer.

Warning — spoilers for the plot and murder mystery are contained within this guide!

There are various occasions where you will be prompted to answer a question during the Incident Phase and after identifying the killer. These answers do not really matter or change the storyline, so we have not listed them in this guide.

How To Solve Setsu's Murder

You would have already had a short tutorial on the Reasoning Phase earlier in the chapter, but essentially you need to create hypotheses by matching clues to the red mystery tiles. You do not need to necessarily complete every mystery tile, as once you have created enough hypotheses, the purple 'Reasoning' tile will appear and you can continue the game.

Your hypotheses are exactly that — proposed explanations — and so they are not necessarily the true events. Many of your hypotheses will conflict with one another and it's up to you to decide the most likely series of events during the Solution Phase.

Just below you will find each mystery in order, as well as the required clues to create each hypothesis. Please note the exact wording, as some clues have very similar names.

What Was That Mummy?

Position In Relation To Red Mystery TileClue
Directly aboveA living corpse
To the rightThe mummy's mask
Far-rightThe mummy's bandages

Was Someone Disguised As The Mummy?

Position In Relation To Red Mystery TileClue
Directly aboveKinu Kotomiya
Top rightGinsaku Goto
Bottom rightMasanori Minami
Directly belowEveryone gathered at the entrance hall

Why Would Someone Don A Mummy Disguise?

Position In Relation To Red Mystery TileClue
Bottom leftEveryone's surprise at the mummy
Directly aboveThe mummy seen in the corridor

What Was Used For The Disguise?

Position In Relation To Red Mystery TileClue
Bottom right[Tokijiku]
Directly aboveThe bandages and rags in the wooden crate
Top rightThe bloody sword the mummy was holding
Directly above the last clueThe vial of dragon's blood

What Did The Killer Use In The Murder?

Position In Relation To Red Mystery TileClue
Bottom leftThe small box containing the [Tokijiku]
Directly belowThe mummy in the wooden crate
Bottom right of last clueThe mummy killed Setsu
Directly aboveWooden crate
Top rightThe sword of Taira no Masakado
Bottom rightDragon's blood

What Was The Purpose Of The Mummy?

Position In Relation To Red Mystery TileClue
Directly aboveA family watching over the Fruit of Youth
Top rightConsuming a mummy grants longevity
Bottom rightWandering the night in search of human blood

Where Was Setsu Killed?

Position In Relation To Red Mystery TileClue
Top leftBlood splatter along the corridor
Top rightThe pool of blood in the storeroom

Ginsaku Had The Key. Is he The Killer?

Position In Relation To Red Mystery TileClue
Top leftThe key the mummy was holding
Directly above the last clueThe key was given to Setsu in secret

What Happened In The Storeroom?

Position In Relation To Red Mystery TileClue
Directly belowThe storeroom was in disarray
Top rightSetsu received the key from Ginsaku

What Was Setsu Planning?

Position In Relation To Red Mystery TileClue
Top rightTampered auction items
Bottom rightThe [Tokijiku] is gone

Why Did Ginsaku Give Setsu The Key?

Position In Relation To Red Mystery TileClue
Directly aboveThey must have a special relationship
Top leftSetsu slapped Ginsaku

Once you're ready to complete the Reasoning Phase, you can progress to the Solution Phase. This starts with the Summary, where you can decide the most likely scenario by answering questions. You do not have to complete all summary questions, once you have provided one summary, you can simply move on from the Reasoning Phase and move on to accuse your murderer.

How To Identify Setsu's Killer

Do you think you know who the killer is? It's time to put your theories to the test. If you answer a question incorrectly, you can go back and attempt it again, however, you will receive a lower score as a result of your mistake.

We have the correct answers listed in order right here:

  • Someone was disguised as the mummy
  • Not the killer
  • Ginsaku wouldn't have given the mummy the key
  • No one at the entrance hall was the mummy
  • Killed after we saw the mummy
  • Masanori Minami

Further questions/answers to the culprit do not affect the storyline, so choose whichever you like.

What Are The Rules Of The Shijima Family?

Position In Relation To Red Mystery TileClue
Directly belowThe order of taking seats
Directly aboveThe cherry blossom ceremony
AnswerEveryone followed Ryoei's lead at the ceremony or No one sat down before Royei took his seat

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